Avia was the brand name under which the commercial vehicles built by the Spanish Aeronáutica Industrial S. A. (AISA) company were marketed.
AISA had been primarily a maker of light aircraft, but in the late 50s turned with some success to light vans, trucks and buses manufacturing, using Perkins Hispania diesel engines.
One of the most interesting applications of Avia trucks was the Klöckner Humbolt Deutz Spanish subsidiary designed Avia-Deutz firefighting engine. Based on an Avia 3500L chassis-cab, it featured an air-cooled Deutz engine and Magirus firefighting equipment.
In the early 70s AISA was taken over by its main competitor Motor Iberica, manufacturer of the Ebro range of commercial vehicles, and gradually Avia vehicles became just badge engineered Ebros. When in the 80s Japanese Nissan Motors took over Motor Iberica, the Avia brand disappeared.
Spanish Avia should not be confused with the Czech Avia aircraft and automotive brand of the very same trade mark.